[Ffmpeg-user] banding artefacts when encoding very subtle gradients

you can also try NSSE as compare function and a constant qscale of 1 (dont forget -qmin 1 though)

Ok, I've got slightly better results with this command : PleinMuseum final.script | ffmpeg -f imagepipe -img pnm \ -i - -i bounce_0506.wav \ -target "pal-dvd" -aspect 4:3 -acodec mp2 -ab 128 -qscale 1 -qmin 1 \ -cmp NSSE -hq -b 8000 -maxrate 8000 -minrate 8000 -dc 10 \ PM-DV-p1-try5.mpg The banding is still present, but the contour boundaries are smoother. It looks a little like a 6-bit color display of the 8-bit original. I hope this makes sense to you. I will now experiment with adding a little noise to all pixels, for each animation frame. Erwin www.xs4all.nl/~notnot